Operational
Amplifier : OP-AMP MCQ’s Part 1
1. An ideal op-amp have,
which of the following characteristics?
a. infinite open-loop
gain b. infinite
bandwidth
c. infinite input
impedance d. all of
the above
2. An ideal op-amp don’t
have the following characteristics?
a. infinite output
voltage range b. high input offset voltage
c. infinite bandwidth d.
infinite input resistance
3. The max output of
op-amp depends upon?
a. gain b.
positive and negative power supply
c. input voltage d. all of the above
4. The differential input
voltage is
a. Vs+ -Vs- c.
V- -V+
b. V+ - V- d. Vs- - Vs+
5. The common mode rejection
ratio (CMRR) of ideal op-amp is
a. finite b.
zero
c. infinite d.
none of the above
6. Positive feedback in
op-amp is used to
a. stabilize output b.
increase gain
c. decrease gain d. reduce noise
7. Positive feedback is
used to
a. oscillator b. comparator
c. adder d. ammeter
8. Op-amp positive
feedback in circuits leads to
a. stability b. instability
c. noise reduction d. none of the above
9. The feedback
connection line in +Ve feedback is connected to
a. +Ve feedback b. –Ve feedback
c. Vs- d. either in one of them
10. Distortion is reduced
when feedback is connected to
a. +Ve input terminal b. –Ve input terminal
c. supply voltage(Vs) d. all of them
Answers:
1. d
2. b
3. b: Max Output is between Vs+ and Vs-
4. c
5. c
6. b
7. a
8. b
9. a
10. b
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